<template>
  <div>
    <el-row type="flex" justify="end">
      <el-select v-model="currentYear" style="width:120px;" size="small" @change="dateChange(1)">
        <el-option v-for="item in yearList" :key="item" :label="item" :value="item" />
      </el-select>
      <el-select v-model="currentMonth" style="width:120px;" size="small" @change="dateChange(1)">
        <el-option v-for="item in 12" :key="item" :label="item" :value="item" />
      </el-select>
    </el-row>
    <!-- 日历 -->
    <el-calendar v-model="currentDate">
      <template
        slot="dateCell"
        slot-scope="{date, data}"
        class="content"
      >
        <!-- date是日期数据 -->
        <!-- {{ date }} -->
        <!-- data是数据 -->
        <!-- {{ data }} -->
        <div class="date-content">
          <span>{{ data | getDay }}</span>
          <span v-if="isWeek(date)" class="rest">休</span>
        </div>
      </template>
    </el-calendar>
  </div>
</template>

<script>
export default {
  name: 'WordCalednar',
  filters: {
    getDay({ day }) {
      const d = day.split('-')[2]
      return d.startsWith('0') ? d.substr(1) : d
    }
  },
  props: {
    startDate: {
      type: Date,
      default: () => new Date()
    }
  },
  data() {
    return {
      currentMonth: null, // 当前月份
      currentYear: null, // 当前年份
      currentDate: null,
      yearList: []
    }
  },
  created() {
    this.currentMonth = this.startDate.getMonth() + 1
    this.currentYear = this.startDate.getFullYear()
    this.yearList = Array.from(Array(11), (value, index) => { return this.currentYear + index - 5 })
    this.dateChange()
  },
  methods: {
    isWeek(date) {
      const d = date.getDay()
      return d === 6 || d === 0
    },
    dateChange(date) {
      const y = this.currentYear
      const m = this.currentMonth
      const d = date || this.startDate.getDate()
      this.currentDate = new Date(y + '-' + m + '-' + d)
    }
  }
}
</script>
<style lang="scss" scoped>
  ::v-deep .el-calendar-day {
    height: auto;
  }
  ::v-deep .el-calendar-table__row td,
  ::v-deep .el-calendar-table tr td:first-child,
  ::v-deep .el-calendar-table__row td.prev {
    border: none;
  }
  .date-content {
    height: 40px;
    text-align: center;
    line-height: 40px;
    font-size: 14px;
  }
  .date-content .rest {
    color: #fff;
    border-radius: 50%;
    background: rgb(250, 124, 77);
    width: 20px;
    height: 20px;
    line-height: 20px;
    display: inline-block;
    font-size: 12px;
    margin-left: 10px;
  }
  .date-content .text {
    width: 20px;
    height: 20px;
    line-height: 20px;
    display: inline-block;
  }
  ::v-deep .el-calendar-table td.is-selected .text {
    background: #409eff;
    color: #fff;
    border-radius: 50%;
  }
  ::v-deep .el-calendar__header {
    display: none;
  }
</style>

